CAN GAP NHA d ) 3 . ( x + 1 ) + 2 . ( x + 2) = 5 e) 5 . ( x+ 6) + 6 . ( x+ 1 ) = 47

Bởi

CAN GAP NHA d ) 3 . ( x + 1 ) + 2 . ( x + 2) = 5
e) 5 . ( x+ 6) + 6 . ( x+ 1 ) = 47
f ) 8 . x – 100 . ( 20 + 5 ) = 4
g ) 9 . x + 2 . ( 100 -98 ) = 4
BAI 2 TINH NHANH
A = ( 44 . 52 . 60 ) : ( 11. 13 . 15 )
B = 123. 456456 – 456 . 123123
C = ( 98 . 7676 – 9898 . 76 ) : ( 2001 . 2002 … 2010 )

0 bình luận về “CAN GAP NHA d ) 3 . ( x + 1 ) + 2 . ( x + 2) = 5 e) 5 . ( x+ 6) + 6 . ( x+ 1 ) = 47”

  1. f ) 8 . x – 100 . ( 20 + 5 ) = 4

    f ) 8 . x – 100 . 25 = 4

    8 . x – 2500 = 4

    8 . x = 4+2500

    8.x=2504

    x=2504:8

    x=313

    A = ( 44 . 52 . 60 ) : ( 11. 13 . 15 )

    A=(11.4.4.13.4.15) : ( 11. 13 . 15 )

     A=[4.(11.13.15)] : ( 11. 13 . 15 )

    A=4.(11.13.15) : ( 11. 13 . 15 )

    A=4.1

    A=4

    B = 123. 456456 – 456 . 123123

    B=123.456.1001-123.456.1001

    B=0

    C = ( 98 . 7676 – 9898 . 76 ) : ( 2001 . 2002 … 2010 )

    C = ( 98 . 76.101 – 98.101 . 76 ) : ( 2001 . 2002 … 2010 )

    C=0: ( 2001 . 2002 … 2010 )

    C=0

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